EP 4113226 A1 20230104 - CURRENT LIMITING CIRCUIT FOR I/O MODULES
Title (en)
CURRENT LIMITING CIRCUIT FOR I/O MODULES
Title (de)
LEISTUNGSBEGRENZUNGSSCHALTUNG FÜR E/A-MODULE
Title (fr)
CIRCUIT À LIMITATION DE PUISSANCE POUR MODULES D' E/S.
Publication
Application
Priority
- US 201916550867 A 20190826
- EP 20186723 A 20200720
Abstract (en)
An output module for an industrial controller provides electrical isolation between each of the output terminals in the module. The output module receives control signals from the industrial controller indicating a desired output state for each of the output terminals and selectively connects power from the output of the electrical isolation to the output terminal. During normal operation, a switching device connects the power to the output terminal responsive to the control signal. A current sensor monitors the current conducted at the output terminal. If the current exceeds a predefined threshold, a current limit circuit clamps the current being output at the terminal. A control circuit may allow the output terminal to ride through a temporary spike in current or disable the output terminal if a fault condition is detected.
IPC 8 full level
G05B 19/042 (2006.01)
CPC (source: EP US)
G01R 19/2506 (2013.01 - US); G05B 19/0423 (2013.01 - EP US); G05B 19/0428 (2013.01 - US); G05B 2219/25342 (2013.01 - US); G05B 2219/25461 (2013.01 - EP); G05B 2219/25462 (2013.01 - EP)
Citation (search report)
- [X] US 2019056708 A1 20190221 - KUMAR KN DINESH [IN], et al
- [X] US 6763109 B1 20040713 - HOSKINS LAWRENCE MARION [US]
- [X] EP 0883044 A2 19981209 - ALLEN BRADLEY CO [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3786735 A1 20210303; EP 3786735 B1 20220831; EP 4113226 A1 20230104; US 11507042 B2 20221122; US 2021063988 A1 20210304; US 2023047072 A1 20230216
DOCDB simple family (application)
EP 20186723 A 20200720; EP 22185683 A 20200720; US 201916550867 A 20190826; US 202217980136 A 20221103